US6031069A
Expired / Lapsed
US
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Triblock terpolymer, its use in medical products and process for its production
Assignee: Aesculap AG
•
Filing: 1997-10-08
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Granted: 2000-02-29
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Expires: 2017-10-08
Abstract
Abstract A resorbable polymer suitable for producing a medical product, comprising a triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B, has as the soft segment a statistical terpolymer with a completely amorphous structure. A process for its production comprises chemically reacting the hard segment monomer with hydroxy terminal groups of the soft segment B. The resorbable medical product produced from the triblock terpolymer can be a textile fabric, produced from multifilaments, a film, membrane or an injection molding.
Inventors
- 👤 Sven Oberhoffner
- 👤 Heinrich Planck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/12; A61L27/00; A61L27/14; A61L27/18; A61L27/50; A61L27/58; A61L31/00; A61L31/04; A61L31/06; A61L31/14; A61L31/148
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
56 words
Triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B, in which the soft segment B is dihydroxy-terminated and chemically bound to the two hard segments A, wherein the soft segment is a statistical terpolymer formed from trimethylene carbonate, ε-caprolactone and glycolide with a completely amorphous structure.
Claim 2
Dependent Claim
56 words
Triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B, in which the soft segment B is dihydroxy-terminated and chemically bound to the two hard segments A, wherein the soft segment is a statistical terpolymer formed from trimethylene carbonate, ε-caprolactone and glycolide with a completely amorphous structure.
Claim 3
Dependent Claim
25 words
Triblock terpolymer according to claim 1, wherein the terpolymer in the soft segment B contains a monomer, which is contained in the hard segment A.
Claim 4
Dependent Claim
21 words
Triblock terpolymer according to claim 1, wherein the hard segment blocks contain 20 to 95 wt. % of the triblock terpolymer.
Claim 5
Dependent Claim
35 words
Triblock terpolymer according to claim 1, wherein the terpolymer of the soft segment B contains 5 to 70 wt. % trimethylene carbonate, 5 to 70 wt. % εcaprolactone and 10 to 70 wt. % glycolide.
Claim 6
Dependent Claim
27 words
Triblock terpolymer according to claim 1, wherein the terpolymer of the soft segment B contains trimethylene carbonate and ε-caprolactone in a weight ratio between 80:20 and 20:80.
Claim 7
Dependent Claim
16 words
Triblock terpolymer according to claim 1, wherein a monomer present in hard segment A is glycolide.
Claim 8
Dependent Claim
67 words
A medical product wholly or partly formed from an absorbable polymer comprising a triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B, in which the soft segment is dihydroxy-terminated and chemically bound to both hard segments A and the soft segment is a statistical terpolymer formed from trimethylene carbonate, ε-caprolactonc and glycolide with a completely amorphous structure.
Claim 9
Dependent Claim
67 words
A medical product wholly or partly formed from an absorbable polymer comprising a triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B, in which the soft segment is dihydroxy-terminated and chemically bound to both hard segments A and the soft segment is a statistical terpolymer formed from trimethylene carbonate, ε-caprolactonc and glycolide with a completely amorphous structure.
Claim 10
Dependent Claim
12 words
The medical product of claim 7 in the form of a film.
Claim 11
Dependent Claim
13 words
The medical product of claim 7 in the form of a microporous membrane.
Claim 12
Dependent Claim
13 words
The medical product of claim 7 in the form of an injection moulding.
Claim 13
Dependent Claim
13 words
The medical product of claim 7 in the form of a textile fabric.
Claim 14
Dependent Claim
79 words
Process for the production of a triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B, in which the soft segment is dihydroxy-terminated and chemically bound to the two hard segments A, wherein the triblock terpolymer is formed by chemically reacting the hard segment monomer with hydroxy terminal groups of soft segment B, which is a statistical terpolymer formed from trimethylene carbonate, ε-caprolactone and glycolide with a completely amorphous structure.
Claim 15
Dependent Claim
79 words
Process for the production of a triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B, in which the soft segment is dihydroxy-terminated and chemically bound to the two hard segments A, wherein the triblock terpolymer is formed by chemically reacting the hard segment monomer with hydroxy terminal groups of soft segment B, which is a statistical terpolymer formed from trimethylene carbonate, ε-caprolactone and glycolide with a completely amorphous structure.
Claim 16
Dependent Claim
30 words
Process according to claim 12, wherein the soft segment contains 5 to 70 wt. % trimethylene carbonate, 5 to 70 wt. % ε-caprolactone and 10 to 70 wt. % glycolide.
Claim 17
Dependent Claim
30 words
Process according to claim 13, wherein the soft segment contains 10 to 40 wt. % trimethylene carbonate, 10 to 40 wt. % ε-caprolactone and 30 to 50 wt. % glycolide.
Claim 18
Dependent Claim
13 words
Process according to claim 12, wherein the triblock terpolymer is treated with γ-rays.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-28 | 2003-08-30 | 2004-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-28 | 2007-08-30 | 2008-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-28 | 2011-08-30 | 2012-02-29 | $7700.00 | Window Closed / Lapsed |